Explosive-engine.



C. E. TRAVIS.

EXPLOSIVE ENGINE.

APPLICATION man AUG-31,1915.

Patented Oct. 24E 1916 3 SHEETS-SHEET l.

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Patented 00% 24 3 SHEETS-SHEET 2.

EXPLOSIVE ENGINE.

APPLICkTmN FILED AUG-31. (915.

C. E. TRAVIS.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG-31. 1915.

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Pittlill ll ll Uhldltllhh CHESTER IE. TRAVIS, OF MORFJCCO, INDIANA.

:arLosivE-Enomn Application filed August 31, 1915.

To all whom t may concern Be it known that I, Ci-ras'rnu T6. TRAVIS, acitizen or" the United iitatcs, residing at Morocco, in the county ofNewton, State of Indiana, have invented certain new, and useful In'unnvements in l lnplosive ldngines; and I do hereby declare the followingto be a. full. clear. and exact description of the invention, suchasivi'll enable others skilled in the art to 'Wl'llOll it appertains tomake use the same.

This invention relates to explosive engines.

The object of the invention is to provide an explosive engine of thedouble action type or wherein an explosion takes place at each end ofthe cylinder ii'rproper sequence, and to further provide improved meansfor governing the speed of the engine.

A further object of the invention is to provide an explosive engineWhich will be comparatively simple in construction and reliable in use,

With the above and other objects in view the invention cousistslin thedetails of con struction. and in thearraugement and. combination ofrants to he hereinafter more fully described and particularly pointedout in the appended claims.

in describing the invention in detail reference will be had to theaccompanying drawings wherein like characters of referonce denotecorresponding parts in the several view and. inwhich-- liig'ure is aplan View of an explosive engine constructed in accordance with theinvention; Fig. 2, a side elevation of same; Fig 3 a section on the line3--3 of Fig. 1; Fig. 4.. a rear view of the engine; Fig. 5, a section onthe line 5 5 oi? 3; Fig. (3, a section on the line (v-i5 of 2; Fig. 7 asection on the line 7--T of Fig. 1; and Fig. S, an enlarged sideelevation of a fragment of the engine with the parts in the positionthey would occupy when the engine is runninc; at an excessive speed.

deferring to the drawings the invention is shown as comprising a base 10upon which is mounted a cylinder 11. Slidably mounted in the cylinder11'. is a piston 12 to Which is connected a piston rod 18 slidable in asuitable bearing 1-1- mounted in one end of the cylinder. The ends ofthe cylinder 11 are formed respectively of hollow castings l5 and 16which are partitioned to provide in take and exhaust chambers 17 and 18.respectively Communication between the chain- Specification of LettersPatent.

lamented Get. 24, 1916.

Serial No. 48,244.

her 18 of the casting 1-3 with the interior of the cylinder ll iscontrolled by an exhaust alvc 1S) lwrmally held seated by a spring 20.Comnnmication between the chamber 1? of the casting 1.3 with theinterior of the cylinder 11 is conb 'filcd h) an intake valve 21normally held really}: a spring 22. Likewise communn'alion between thechamber 18 of the casting in and. the i/LllOl' of the cylinder l'l:ntroilcd by an exhaust valve 13 .n being normally held seatedfountainieat on between the chamber i of the castin l1 and the interioroi th \lillflll 11 is controlled by an intake valve I, normally seatedby a spring 26. he interior of the chamber 18 of the casting:communicates with an e:\:- haust manifold 27, while the interior of thechamber 1'8 of the casting l6 communicates with an exhaust manifold '28.Likewise the interior of the chamber 17 of the casting 15 communicateswith an intake manifold 29 While the interior oi the chamber 17 of thecasting 16 comn'iunicatcs with an intake manifold 30.

lilo'untcd upon the cylinder 11 and opera tivcly disposed with respectto the combustion. ends of said cylinder are spark plugs 31 and 32respectivei through the medium of which the charge at each end of theeylinder is exploded at the proper time.

Mounted upon t-he base 10 and secured to the casting; 15 is a cross headguide 33 in which is slidably mounted a cross head 3-4 connected to thepiston rod 13. Pivoted to this erosshead 34 is a pit man 35 which latteris in turn operatively connected to a crank shaft 36 rotatably mountedin bearings 37 secured to the base 10. Fixed on the crank shaft 3'8 arethe usual fly Wheels 38. Mounted upon'the base 10 a bearing 39 in whichis rotatably' mounted a cam shaft 40 carry-' ing cams 41 and 4-2. Fi'xed on the shaft L0 Sill . is a. gear 43 which meshes with a gear it vAlso fixed upon the crank shall; 36 IS a belt wheel 45' fixed upon thecrank shaft 86.

the purpose of which will presently appear. The crank shaft 36 carries atimer 47 which includes the usual make and break elements 48 whichrotates with the shaft 36.

Mounted upon the guide 33 is a bracket 49 which operatively supports agovernor 50. This governor includes the usual vertical shaft 51 andmember 52 slidable on said shaft. Rotatablv mounted in the bracket 49 isa shaft 53 which has fixed thereon a bevarm 58 one end of which ispivotally connected to .the member 52 of the governor, while the otherend of saidarm pivot'ally supports a member 59. Depending from thismember 59 are rods 60 and 61 the purpose of which will presently appear.Mounted upon the base. 10 are guides 62 in which is slidably mounted atappet rod 63. One

. end of this rod 68 carries a roller 64 adapted to be engaged by thecam lduring the rotation of the shaft 40. Mounted on the casting 16 is abracket 65 in which is pivoted a lever 66 having one end pivotallyconnected to the rod 63 while the other end thereof is cperativelyengaged with the stem of the valve 23. 1

Mounted upon one ofthe guides 62 and also connected to the guide 33 is aguide 67 in which is slidably mounted a tappet rod 68 one end of whichcarries a roller 69 adapted to cooperate with the cam 42 during the totation of the shaft 10. Pivoted upon one of the guides 62 is a lever 70one end of which is pivotally connected to the rod 60 while theother endthereof is adapted to engage a projection 71 on the rod 63 under certainconditions to prevent irovement of the rod 63 longitudinallv under theinfluence of the spring 24. Likewise there is pivoted on the guide 67 alever 72 one end of which is pivotallv connected to the lower end of therod (51 while the other end of said lever is adapted to engage aprojection 73 on the rod 68 under certain conditions to prevent movementof the rod 68 longitudinally under the influence of the spring 22. Therod 63 carries a contact 74 adapted to be engaged by a contact rod 75mounted on one of the guides 62 and insulated therefrom. Likewise therod 68 carries a contact 76 adapted to be engaged by a contact rod 77mounted on the guide 67 and insulated from the latter. The contact 74.-and contact rod 75'and likewise the contact 76 and contact rod 77 areinc uded in the ignition circuit of the engine so that when saidcontacts and contact rods are out of engag ment. the circuit throughrespective spark plugs will be broken.

In the operation of the engine under normal conditions the cams 41 and42 cc iperab ing with the tappet rods 63 and G8 respectively properlycontrol the, intake and exhaust ot' the engine, it being of courseunderstood that the intake valves 19 and 25 are opened under theinfluence of the suction created by the piston 12. The ignition of thecharge at either end of the cylinder 11 is effected by the timer 47.When the speed of the engine increases beyond a predetermined cxtent themember 52 of the governor will move downwardly and rock the lever 58.This action will cause the rods (30 and 61 to move upwardlyand rock thelevers 70 and 72 to dispose the free ends of the latter in the path ofrespective projections 71 and 73 and thus lock the exhaust valves of theengine in open position and also hold the contact rods 75 and 77 out ofengagement with respective contacts 74 and 76 and thus break theignition circuit of the engine. As soon as the speed of the engine isdecreased to the desired extent the member 52 of the governor will moveupwardly and rock the levers 70 and 72 out of engagement with respectiveprojections 71 and 73 when the operation ofthe engine will again becomenormal;

What is claimed is In an explosive engine, the combination of acylinder, an exhaust valve, means normally holding the exhaust valve inclosed position, a slidable tappet rod adapted during its reciprocationto open the exhaust valve intermittently, a projection on said rod, agovernor, a pivoted lever having one end directly connected to thegovernor, a

pivoted locking lever, and connections between the locking lever and thefirst lever whereby the locking lever will operate when the speed of theengine increases a predetermined extent to move the lever intoengagement with said projection and lock the tappet rod in position tohold the exhaust valve. open.

' In testimony whereof, I affix my signature. in the presence of twowitnesses.

CHESTER E. TR VI 5 W" .esses:

\f. E. Groves, 'l. F Punrr.

